A U.S. Army Soldier assigned to 155th Armored Brigade Combat Team, Task Force Spartan, works with a Qatari soldier during bunker clearing training as part of Exercise Eastern Action 19, Nov. 7, 2018. (U.S. Army photo by Sgt. James Lefty Larimer)

U.S. Army Gen. Joseph Votel and Command Sgt. Maj. Bill Thetford await the arrival of approximately 130 future service members prior to an Oath of Enlistment ceremony at Raymond James Stadium. (U.S. Central Command Public Affairs photo by Tom Gagnier)

U.S. Army Gen. Joseph Votel, commander, U.S. Central Command, and U.S. Army Gen. Raymond A. Thomas III, commander, U.S. Special Operations Command lay a wreath in observance of Veterans Day during a ceremony, Nov. 8. (U.S. Central Command Public Affairs photo by Tom Gagnier)

U.S. Marine Corps Maj. Gen. Michael E. Langley, right, and U.S. Army Gen Joseph L. Votel, commander, U.S. Central Command, left, depart to visit U.S. Marines and sailors with the USS Essex ARG. (Photo by U.S. Army Sgt. Franklin Moore)

The USMC F-35B conducted an air strike in support of ground clearance operations, and the strike was deemed successful by the ground force commander. (U.S. Marine Corps photo by Cpl. A. J. Van Fredenberg/Released)

“The Afghan army has taken severe casualties over the past year-and-a-half and they’ve stayed in the field fighting,” Defense Secretary James N. Mattis said. (U.S. Army photo by Staff Sgt. Neysa Canfield/TAAC-South Public Affairs)